Please be aware that Jakarta and Taipei has multiple airports and that these results are for all airports serving the city.
The best month to fly between Jakarta and Taipei is November and the most expensive month to fly is December. (Average prices, based on 1093 datapoints.)
The best day to arrive at Jakarta is Friday and it would be best to avoid Monday, as prices are on average 17.41% higher than on Friday. (Average prices, based on 484 datapoints.)